Brazing-burner.



W. H. VAN HORN.

BBAZING BURNER.

APPLIOA'IJION FILED MAY 27, 191

Patented July 30, 1912.

- wwwmw v aw g UNITED s'rATEs PATENT OFFICE.

wILLmni'H. van HORN, or BALTIMORE, MARYLAND, ssrenon To cLAnEnon m.

., KEMP, 0F BALTIMORE, MARYLAND.

BRAZIL! (Fr-BURNER.

Specification of Letters Patent.

Patented July 30, 1912.

To allwhom it may concern Be it known that 1, W LLIAM H, VAN HORN, a citizen of the United States, residing at Baltimore, in the State of -Maryland, have invented new and useful Improve ments in Brazing-Burnersfof which the following is a specification. Y i

i This invention relates to blast burners, and has for-its object to provide a tool of the-type especially adapted for the use'ofa hydrocarbon gas as a fuel, such as is produced by theintermingling or combination of gasolene and air. J

Blast or brazing burners in use at the present time form the jet by burning .a mixture'of any suitable gas with air or steam fed through separate pipes to the nozzle, where they combine, either the gas or air or steam be-.-

ing under pressure to form the jet of flame necessary for. the operation of the tool. With this type of burner hydrocarbon gas cannot be successfully employed as the pressure of the air or steam, or of the gas itself, immediately extinguishes the flame; nor is it possible to preserve the jet o-ffiame when the gasolene gas is used alone under pressure without employing a pilot light burning'continuously' so long'as the tool is in use. r

To overcome the ditficulties encountered in the use of gasolene gas, the burner hereinafter described in detail has been devised and consists. broadly of two'independent pipes, each receiving a supply of gasolene gas under pressure from a common source by separate channels provided with pressure reducing means, one of said pipes being fittedwith' a jet nozzle'a'ndt-he other pi e terminating in a pilot burner adjacent t e outlet of said nozzle. If,-now, the pilot be lighted and gasolene gas admitted to the jet pipe, the gas, on emerging from the nozzle, is lighted and kept burning by the pilot light, producing a long pencil of flame pointed at the end. 1

\Vith this object-in view, the invention consists of the novel construct-ion and combination of'parts. hereinafter described and claimed, and illustrated in the accompany in'g drawing, in. which- Figure 1 is a side view of the improved blast or brazing burner; longitudinal] sectional view thereof, en- 'larged;'F ig. 3, a view of the nozzle end of the tool; 4' and 5, cross-sectional views Fig. 2, a vertical on the nnes 4. 4 and 5 -5, respectively, of v Fig. 2; Fig. 6 is a longitudinal sectional view of a modified form of the blast burner; Flg. 7, a top view of the nozzle end of-the modified burner, and Fig. 8, an end view of the same;

In the drawing, the reference numeral 1,-

designates a pipe for conducting hydrocarbon or gasolene gas to the body 2 of the burner from which project two pipes 3 and 4:,the pipe 3 terminating in a jet nozzle 5, and the pipe 4 :being fitted with a pilot burner 6; In the body- 2 is a chamber 7 to receive gas under pressure from the inlet pipe 1, and two passageways 8 and 9 leading from'the chamber, the former opening into the pipe 3 and the latter into the pipe 4:. The quantit'yand pressure of gas passing to the' nozzle and pilotis regulated by screw plugs or other appropriate means 10 and ll in the respective passageways 8 and 9.

In the preferred form of the invention illustrated in Figs. 1 to' 5, the pipes 3 and 4:

are concentrically arranged, the blast pipe 3 being within the pilot burner pipe l,

whereas in the modified construction, the v pipes 3 and 4* are placed side by side, either parallel as shown, or in any other desired manner. The nozzle- 5, when the pipes 3 and a are concentric, projects a short distance beyond the pilot 6, which is provided with, a ring of fine holes 12 surrounding said nozzle, through which holes gas at low pres;

sure emerges, and when lighted inclose the nozzle outlet 13 in a flame to keep the jet of gas emerging therefrom under pressure, always lighted. The nozzle and pilot may be integral, or made in two connected parts. To prevent outside currents of air from extinguishing the pilot light, a rim 14 projects beyond the holes 12 and nozzle 5 forming a combustion chamber, and may,-if thought advantageous, have a reduced outlet 15.

The pilot burner 65 in the modification, is made in the form of a hollow box having a perforated concave 'side 16, to partly em-' brace the outlet end of the jet nozzle 5, and extending both in advance and in rear of said outlet end, the perforations in the rear being desirable to relight the burner, the jet at any time the openin s in front of the nozzle.

A cock 1 is provided in the body 2, or in should blow out the light from the jetpipe to admit and cut oif gas to the Y ngzzlaand regulate the, by the quantity as fed thereto. rom the above -"description, it will be apparent that a simple, convenient and prac- 5 Having thus described my-inventiomwhat tical 'blast' or brazin burner for using a hydrocarbon vj'gas as' el,'has been devised, and has proven very efiicient inactual use. a

"In operatiomthe flame vofthe pilot burner fills'the cavity within the rim 14', surrounding the outlet of the jet nozzle and proj .trudesslightly. outside {said rim,.as'shown in- Fig. 1.. The ga'sunder pressure issuing from :the nozzle is forced through the pilot flame and ignited -thereby, and" kept lighted so long as gas continues. to flow from the nozzle.

. I- claim'and desire tosecure by United'States Letters Patent is ing hydrocarbon gasunder pressure'to 3'1. Ina brazing burner, a body having a fuel chamber, means for conveying hydro-,

carbon gas under pressure to said fuelcham-. gber, a-jet'nozzle connected by a passage. to

said fuel chamber, a pilot burner in proximity to the jet nozzle connected by a separate passage to said fuel chamber, said pilot burner having .a' plurality of -outlets and 2. In a brazing burner, a b y having a fuel fchamber and separate passages leading from said fuel chamber, means or conveysaid fuel chamber,"a jetnozzle, a pipe connected to said 'jet nozzle and to the body opening into; one ,of said. passages, a pilot burner in closeproximity to the'jet nozzle, a pipe connected to saidpilot burner and to thebody and communicating with the other passage, said pilot burner having'a pluralitywf outlets and adapted to maintain the -flame of" the jet nozzle against extinguishment by the pressure of-gthefgas, an adjustable. valve for regulating the quantity and pressure-of gas .'-passing through each pipe, and a cut off valvej'for. the jet nozzle forward of the regu lat-ing valve therefor.

3. In-a brazing burner, av body having a "fuel chamber, and] two separate passageways therein opening into .the fuel chamber, an imperforate pipe leading from each passage-way, means for delivering hydrocarbon gas under pressureto said fuel "chamber, a

jet nozzle on one of said pipes, apilot I burner on the other pipe Jadapte'dto produce .a sprawling. flame in close proximity to the jet nozzle te-prevent the flame of the jet .nozzle from being-extinguished by the pressure of'the gas, adjustable regulating valves in the gas passages; andia cut-01f valve for the jet nozzle/in advance of the adjustable valve therefor. I a

4, In a brazing burner using hydrocarbon gasunde'r pressure as a fuel,\a body having a fuel chamber, means for delivering hydrocarbon gas thereto, a jet nozzle, a pilot burner in close proximity thereto, means for conveying hydrocarbon gas from thegfuel chamber to the jetvnozzle, separat 11193115 for conveying hydrocarbon gas from the fuel'chamb er, to the pilot burner, said pilot burner being adapted to produce a spreadsure of'the gas, regulating valves for the jet nozzle: and the pilot. burner, and a cut-cit valve for the jet nozzleing flame togprevent'the flame of the jet. nozzle from being extinguished by the pres- 4 '5. In a brazingburner, a body forminga part thereof containing a. fuel chamber,

means for conveying hydrocarbon gas under pressure to said fuel chamber, a'jet nozzle connected to' said fuel chamber, a pilot burner in proximity to the. jet nozzle connected by a separate passage to said fuel chamber, and separate means forregulating the flow of gas to the'jet nozzle and to the pilot fromv the common fuel chamber, said pilot burner .havinga plurality of outlets andadapted to maintain the flame of the jet nozzle against 'extinguishment by the pressure of the-gas. I

" .6. In a brazing burner, a body having a :Euel chamber-in one end and a pipe for con-' vey'ing hydrocarbon gas thereto, a pipe on the opposite end 'of said body having'a Jet nozzle at its free end, a surrounding pipe also connected to the body concentrlc' to the jet nozzle pipe an'dhaving a pilot burner at its tree end adjacent to-the jet burner, in

dependent passage ways between each of said pipes and the fuel chamber, means for regulating the flow 'of'gas through said passageways, and a separate means mounted in the body'for regulating the quantity of gas entering the 'jet nozzle pipe.

Intestimony whereof I have hereunto set my hand in presence of two subscribing wit nesses.

' WILLIAM HIVAN HORNQ- Witnesses:

JOHN S.-CoLn,

EDGAR J. KEMP. 

